.hero {
    text-align: center;
    padding: 50px 20px 20px;
    color: var(--text-color);
}

.calculator-section {
    display: flex;
    justify-content: center;
    padding: 20px;
}

.calculator-container {
    background: #fff;
    padding: 25px;
    border-radius: 20px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    max-width: 900px;
    width: 100%;
}

.input-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 15px;
}

.input-group label {
    font-weight: 600;
    margin-bottom: 5px;
    display: block;
    color: #333;
}

.input-group input {
    width: 100%;
    padding: 10px;
    border-radius: 8px;
    border: 1px solid #ccc;
}

.input-group input:focus {
    border-color: var(--primary-color);
    outline: none;
}

.button-group {
    display: flex;
    gap: 10px;
    margin-top: 15px;
}

button#calculate-btn,
button.reset-btn {
    flex: 1;
    padding: 12px;
    border: none;
    border-radius: 10px;
    font-size: 1rem;
    cursor: pointer;
    transition: 0.3s;
}

button#calculate-btn {
    background: var(--primary-color);
    color: #fff;
}

button#calculate-btn:hover {
    background: #1e88e5;
    transform: translateY(-2px);
}

button.reset-btn {
    background: #f05a5a;
    color: #fff;
}

button.reset-btn:hover {
    background: #d94b4b;
    transform: translateY(-2px);
}

.results {
    margin-top: 25px;
    padding: 20px;
    border-radius: 12px;
    background: #f9f9f9;
}

.summary-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 15px;
}

.summary-table td {
    padding: 10px;
    border-bottom: 1px solid #ddd;
}

.summary-table td:first-child {
    font-weight: 600;
}

.hidden {
    display: none;
}